Valve



1949. D. KLEISS 2,478,197

VALVE Filed Sept. 28, 1945 k ffi.

INVEN TOR.

4270/? NEY Patented Aug. 9, 1949 UNITED STATES PATENT OFFICE VALVE Louis D. Kleiss, United States Army, Seattle, Wash.

7 Claims.

amended April 30, 1928; 370 O. G. 757) 1 The invention described herein, if patented may be manufactured and used by or for the Government for governmental purposes, without the payment to me of any royalty thereon.

elevation; Figure 2 is a plan view of Figure 1; and Figure 3 is a sectional View taken along the line 3-3 of Figure 1.

Referring now more particularly to the accom- My invention relates, generally, to globe or panying drawing, the numeral 4 designates the needle type valves and it has particular relation valve casing supplied with the usual threaded to such valves which are manually operable. shank 5 for insertion into a cylinder or the like,

Fluid pressure on the underside of a convenand with a threaded shank 6. The shank 6 is tional globe or needle valve exerts a force tendshown with a threaded closure nut I having an ing to raise the valve stem. In the prior valves, inner liner or facing 8 forming a protection cap friction alone holds this force in check. This of conventional construction. friction may be overcome by vibration or accident The valve casing 4 is provided with an inlet resulting in undesired opening of the valve. port 9 and an outlet port ID. A valve stem ll, Fluid pressure within the valve body, which may of a spindle and screw type, is adapted at its be caused by leakage past the valve orifice or by lower end within the chamber M to fit into a entrapment of liquified gas, is dependent upon valve seat l2 formed in an opening l3 of the inlet the constriction of the valve outlet either by a port 9. The valve stem has at its upper end, a sealing cap or other means of closure, and when squared portion for attaching and securing an such means is present, the internal pressure tends ordinary handwheel 15 which may be held in to raise the stufling box cap or packing nut, and place by a nut l6 and a washer IT, in the usual the packing is loosened. manner. The valve stem II is provided with a Shrinkage of the packing due to age or other q -pi r hr d p r n l8 fi n cause also promotes seepage of the fluid or gas. into a female screw l9 in the bore of the casing 4.

The likelihood of such accidental opening in a Conventional packing material 20 is fitted into valve is undesirable, especially with valves ina packing gland 2| within the valve casing 4. stalled on cylinders containing compressed gases The valve casing 4 has a threaded shank 22 in liquid form. Such cylinders are subject to long at its other end pp s t f m the th ad shan storage and the shocks of transportation. The 5 up Which is threaded a Packing hilt vibration of any kind usually causes small leaks Attention is directed to the fact that the threads, which are not only objectionable from loss of the 0f he packing nut 23 and the shank 22 upon gases themselves but are also dangerous when which it is threaded, are opposite to those threads such gases are inflammable and are combustionof the p n 18 0f e stem I and i s female forming. screw I9, wherein if the former is threaded to the My invention obviates present difliculties enright then the latter is to be threaded left or vice countered by the use of such valves as are now Verse, as is e convenient in e me hod of used by the trade and accomplishes not only a manufacture. saving of fluid or gases but also provides a safety e handWheel which Constitutes the factor which is desirable in present day operamanual pe a ing means for the valve, is intertions. connected with the packing nut 23 by a torsion An object of my invention is to prevent acci- 40 spring One d f ch is a c o ed in an dental opening of a globe or needle type valve. opening 25 in the handwheel l5 while the op Another object is to provide a force in a globe Site end s anchored n n Opening 6 0 th or needle type valve installed on a pressure vessel packing nut 23. The sp 24 is S be t at which opposes the force exerted on the valve stem each of its e s that y an e inserted into tending to open the sam the openings 25 and 26, as shown in the drawing.

Still another object is to pl a t t The torsion spring 24 is at all times under comtorque to the valve ste of globe r needle pression when inserted in the openings 25 and 26. type valve installed on a pressure vessel which Thus, e Spring ends are held in p and at opposes the force exerted on the valve stem the same e t e sp ing 24 is under a torsion through the threads thereof tending to turn the stress thereby urging clockwise rotation of the same toward the open position. stem II and counter-clockwise rotation of the Other objects of my invention will, in part, be packing nut 23, or counter-clockwise and clockobvious and in part appear hereinafter. wise, respectively, dependent on the right or left My improvements will be undestood by referhand threadings of the various elements heretoence to the annexed drawing, in which fore mentioned.

Figure 1 is a vertical sectional view of my improved valve, the valve stem being shown in In operation the valve is inserted into a cylinder and the handwheel is tightened to seat the valve 3 stem into the valve seat to prevent the escape of the fluid or gas within the cylinder. The packing nut also is held in tight relationship to the valve casing andalso. creates-a gas-tight bond with the packing material so that no gas or fluid can escape through the valve at its opening covered by the packing nut. In storage or shipment,

if the cylinder should be subject to vibration or shock thereby loosening the handwheel, the packing nut would be tightened still more. by the action of the torsion spring and also if the packing material, by shrinkage or by loosening of its mass, should become less firm or less tight and so'loosen the packing nut, the torsion spring will .then exert its force and tighten the packing nut onto the valve casing which in turn compresses the packing material to prevent gas or fiuid' from'escaping' The force exerted by the pressure of the gas or liquid within thecylinder-isalso countera'ctedby the above arrangement-of elements to regulate the valve and prevent any escape-or-wastage of gas -or" fluid.

It is thought that from the foregoing, the construction, operation, and the many advantages of :my valvewill be fully comprehended. It is ob- -'vious,- however, that the details of construction may be varied without departing from the'spirit 'of the' invention and thereforeit is to be understood that all matters set forth hereinbefore or 'shown on the accompanying drawing-shallbeinterpreted as illustrative and not in a limiting -sense.

I'claim:

1. Incombinationwitha valve and its casing,

a threaded-valve stemassociated with the valve,

-an oppositely threaded packing nut on the valve easing and throughwhich thevalve stem extends, a torsionally-stressed spring compressed and coiled about the-valve stem and having its ends fixed to the valvestem and packing nut whereby the spring will-tend to simultaneously maintain the pack-ingnut in sealing position and the valve -in closed position.

2.--In combination with a valve and its. casing, wright-threaded valve stem associated with the valveya left-threaded packing nut on the valve casing and. throughwhich the valve stem extends, 'a torsionally-stressed spring compressed and coiled to the right about the valvestemand having its, ends 'fixed'to vthe'valve stem'and packing'nut 4. In combination with a valve and its casing, a right-threaded valve stem associated with the valve, a left-threaded packing nut on the valve casing. and through which the valve stenrextends, a torsion'ally-stressed spring compressed and coiled to the right about the valve stem and having 1 its ends fixed to the valve stem and packing nut whereby the spring will tend to rotate the packlug nut in a counter-clockwise direction to sealing. position and the valve stem in a clockwise di- ';-r-ection to maintain the valve in closed position.

5. In combination with a valve casing, a right- *threaded" valve stemassociated with the valve,

anhand wheel fitted to the valve stem, a leftthreaded packing nut on the valve casing and throu'ghwhich the' valve stem extends, a torsionally-stressed spring compressed and coiled to the right about the valve stem and having its erids fixed to the valve stemin the packing-Wheel 2U I simultaneously maintain the packing 'nut in sealand packing nut-whereby the spring will tend to ing po'si'tion'and valve in closedposition.

I 6. In combinationwith a valve and-valve casing,

-' athreaded valve stem rotatable about-its axis'an'd providedwith a'handwheel, an-opposi-tely threaded packing-nut, X packing material enclosed and compressed by the packing '-nutwithin thevalve casing and surrounding thevalve stem, a torsionally-stressed spring compressed and "coiled about the valve stem with oneend-retainedin-the handwheel andthe other end retained-inthe packingnut thereby urgingrotationbf the packing nut in one direction to compressthe'pa'cking material'and rotation-of thevalve stem in'the opposite direction to promote theclosureof the 'valve.

' 7 In combination with a valve and: valve casing,

-a right-threaded 'valvestem rotatable-about its axis and provided with"a" haridwheel,a leftthreaded; packing nut; packing material enclosed and compressed by'the packing nut withinthe valve-casing and'surrounding 'the'valve stem, a

torsionally-stressed spring compressed'and coiled -t0the' right about the valve stem with'one end-retained in'the handwheel and the 'othenend'retained-in the packing nut thereby urging counterclockwise rotation of 'the' packing-nut to compress the packing materialand clockwise rotation of the Valve stem to promote the closure of the valve.

LOUIS D. KLEISS.

REFERENGES "CITED ..The following references-are of record inuthe fileof this patent:

.UNITED. STATES-:PATENTS Number Name Date J 166,483 *Stillson ''Aug.' 10, 1875 1216,62? Moore June 17,1879 115064305 Fisher June" 10, 19 3 1,142,145 Collar 'June" 8,' 1915 31,400,488 i Landgreve Dec. 13,' 1921 31,979,857 "Benson Nov. 6, 1934 

